Strengths Bought the 3940 because it was the largest 40 series that would take a MM mower. New transmission is fantastic (a key reason I chose the K over the JD). Engine has plenty of power even on heavy snow in mid range. Cab provides a great dust free, perfect temp, relatively quiet working environment. FEL mounts is <5 min. Very stable mowing sideways (no choice) on some steep hils with optional extra wide turf tires.

Weaknesses Frequently hit my elbow on exposed nut near PTO lever (pretty minor but I did mention it to Kubota rep). Took a day to get used to postioning of hydro pedal close to fender but no problem now. Mounting of the snowblower subframe takes about an hr to install and was a bit of a struggle the first time (use 2 small dollys to move it under tractor). But I was glad to find that I can still use the FEL with the SB subframe attached.

Overall This is my 3rd Kubota and with 11 mo and ~100 hrs this tractor has exceeded my expectations (use for maintaining 17 acres, 9 acres of grass, 1/4 mi drive). I took a hard look at the JD 3720. Both are great machines. Price was roughly the same but the new Kubota trans and my perception after test drives that the 3940 was more stable sideways on hills swung the deal. The L3940 HSTC is one great tractor. [paid about 91% of list on total package of tractor/FEL/SB/Mower plus a few extras thrown in and got 3 yr no interest financing from Kubota]

Strengths Loads of power, extremely easy to use. You can run it all day and not felt like you have been working. awsome features of the L40 series with HST.

Weaknesses Hmmm? can't think of anything. It's not made to plow field with all the time, But for a extra tractor such as my case or for the weekend warrior. I will do a little of everything and alot of dirt work.

Overall For the type of tractor, it doesn't get any better. If want to plow or shred everday, get a manual transmission and ag tires...

Strengths Lots of POWER!! The diesel engine in this tractor has boat loads of power to go with any job you throw at it. It is not turbocharged which greatly helps with fuel consumption. The cab layout is much improved with certain flaws. Easy to use, fun to drive, smooth ride. Better visibility with sloped hood. New cab provides lots of room especially shoulder and head room. New fuel overflow meter. Beeps as it gets full. Makes filling it a sinch.

Weaknesses Mower adjustment is still very difficult to use in the cab. Hydrostatic pedal to to close to the fender inside, causing your foot to catch on the fender. Loader lever is in the way of the right door. Cannot get in or out of that door. No grease fitting on mower PTO shaft. Dealer provided a aluminum based lube to apply once a year. It is messy and the shaft can be tempormental to get back together. Mine has the R4 Indus. tires. The new tread pattern is spaced out on the rear two tires. They slip very easily.

Overall Kubota has one great tractor!!!!